如何通过ambari api来启动相关service

最近有需要从cli来重新启动service。下面举个例子说明下
参考链接：

curl -u admin:PWD -H 'X-Requested-By: ambari' -X POST -d '
{
   "RequestInfo":{
      "command":"RESTART",
      "context":"Restart HDFS Client on HOSTFQDN",
      "operation_level":{
         "level":"HOST",
         "cluster_name":"prod"
      }
   },
   "Requests/resource_filters":[
      {
         "service_name":"HDFS",
         "component_name":"HDFS_CLIENT",
         "hosts":"HOSTFQDN"
      }
   ]
}' http://ANBARI-SERVER:8080/api/v1/clusters/prod/requests